\chapter{三角函数}

\section{任意角的三角函数}

\input{units/chapter-2-1}
\input{units/chapter-2-2}
\input{units/xiti-6.tex}

\input{units/chapter-2-3}
\input{units/chapter-2-4}
\input{units/xiti-7.tex}

\input{units/chapter-2-5}
\input{units/chapter-2-6}
\input{units/xiti-8.tex}

\newpage
\section{三角函数的图象和性质}
\input{units/chapter-2-7}
\input{units/chapter-2-8}
\input{units/chapter-2-9}
\input{units/chapter-2-10}
\input{units/xiti-9.tex}

\newpage
\input{units/chapter-2-xiaojie}
\newpage

\nonumsection{复习参考题二}
\input{units/chapter-2-fuxi-A}
\input{units/chapter-2-fuxi-B}
